Inject Util Class with Google Guice vs static Methods?

Question

I\'m wondering if it is a good style to inject utility methods with google guice.

Let\'s say we have a Converter Utility Class:

public class UtilClas         


        

Answer 1

It depends on the nature of your convert() method.

If it's something

• simple
• deterministic (i.e. doesn't depend on additional parameters)
• have no side effects
• is unlikely to change
• etc

you can keep it as a static utility method.

Otherwise it's a good candidate for dependecy injection (you can rename it to ConversionService to make it more clear).